Composite differential plenum



FIG. 1 is a front perspective view of a composite differential plenumshowing our new design;

FIG. 2 is a rear perspective view of FIG. 1, but rotated 180°;

FIG. 3 is a rear elevation view;

FIG. 4 is a front elevation view;

FIG. 5 is a right side elevation view;

FIG. 6 is a left side elevation view;

FIG. 7 is a top plan view, rotated 90° clockwise; and,

FIG. 8 is a bottom plan view, rotated 90° counterclockwise.

The broken line shown in the drawings are for the purpose ofillustrating portions of the article and form no part of the claimeddesign.

CLAIM The ornamental design for a composite differential plenum, asshown and described.